1PC Tube DIY Adapter Socket Converter 6SN7 to 6922 for Vacuum Tube Amplifier Original machine use 6922 6DJ8 E88CC ECC88 6N2 6N6 vacuum tubes. After plugging in the 6SN7 TO 6922 adapter, you can use 6SN7 6SL7 6N8P 6N9P CV181 vacuum tubes Material: Ceramic socket inside